While investigating the disappearance of Margaret Shorey at a supermarket, Grissom and Catherine stumble upon a serial killer who claims to have killed five women in supermarkets located ... See full summary »



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Episode cast overview, first billed only:
Kenny Berlin
Hand Writing Expert
Brenda Shorey
Margaret Shorey
John Himmel
Steve Smith - Store Manager


While investigating the disappearance of Margaret Shorey at a supermarket, Grissom and Catherine stumble upon a serial killer who claims to have killed five women in supermarkets located along the I-15. Sara and Warrick is given the case of the death of a man who, his brother claims, was killed by a burglar. Sara soon suspects that the brother is not telling the truth. Nick is specially requested to solve a case of harassment. Written by Ploy P.

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TV-PG | See all certifications »



Release Date:

12 January 2001 (USA)  »

Company Credits

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Technical Specs


Sound Mix:

| (DTS 5.1)


Aspect Ratio:

1.33 : 1
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Did You Know?


When Nick comes in to Grissom's office, setting off Grissom's "Big Mouth Billy Bass", the fish on the wall alternates positions in between shots and can be singing when no song is heard and can be still when he's singing and there is music. See more »


Sara Sidle: I never said you weren't a good CSI.
See more »


Who Are You
by Pete Townshend
Performed by The Who
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User Reviews

I-15 Murders
6 August 2015 | by (United States) – See all my reviews

Chilling episode of CSI (oh, dear, pun unintended) has women being kidnapped, killed, and put in freezers by a truck driver, with a woman's handwriting detailed on supermarket ladies' room doors telling the local authorities to catch "her". Grissom wonders if the handwriting is of a woman riding along with an Interstate 15 serial killer.

In the previous episode, Warrick was supposedly caught in a casino gambling when he should have been in court. So Sara Sidle assumes Grissom (when he doesn't use disciplinary action against him) is being partial to him because Warrick is "his favorite CSI". So she holds a grudge the entire episode, and Grissom has her working with Warrick on the case regarding one brother supposedly finding the other brother dead from a robbery gone awry. But marks on broken glass (indicating a window broken from inside the house, not outside), a gun found inside a computer (with the same window glass embedded in the butt of the gun handle), and valuables that were never taken could indicate something else…couple that with a motive for wanting the victim dead (beneficiary to estate and moneys), and the brother still alive might not be as heartbroken as he appears. His daytrading job might also be reason to consider him a suspect. Grissom and Catherine are working the I-15 murders, and a handwriting expert helps them identify the kind of woman behind what was written in magic marker on the bathroom stall doors. Nick is assigned the case of a possible shoplifting, but with spit on the suspect's blouse (a hooker he knows from a previous case; and this is a hot babe he is obviously attracted to), it could be that the security guard making the accusation was just being an asshole. Nick's association with the young woman reaches the ears of even Homicide detective Brass.

This episode is really neat thanks to a few key scenes. The handwriting expert's detailed examination of the sentence wrote on the Vegas market bathroom stall, Sara's sizing up a fishy "dressed" robbery scene in quick order, and how Warrick's supposed guilt turns out be a false assumption. The show was really building the characters, and that is what took CSI: Las Vegas away from just being a forensics procedural. Other CSI shows would follow suit. It isn't just about the cases themselves and unraveling the mysteries behind them—sure that is a major cool factor but not the entire package—but how the criminalists are developed into fully fleshed human beings. Their reactions to crime scenes, lives away from work, how their humanity and feelings do sometimes emerge, and through their own unique gifts, talents, and abilities they are able to solve complex crimes all play an important part in how we view them episode to episode.

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